In order to enlarge engineering fact application function of decision support system , decision science is combined with life cycle cost theory of technology economics . an applied method of equipment updating occasion is advanced . its validity is proved through the instance 为扩展决策支持系统的工程实际应用功能，将决策科学与技术经济学中的寿命周期费用理论相结合，提出了一种确定设备更新时机的实用的方法，实例证明了该方法的有效性。
The paper expounds the application of lancard technology , an advanced technology in maintaining and managing computer rooms , which contains not only hdd - protecting function which is quite familiar , but also the multi - os application function that extends the applying area of computer rooms , and the copying - through - the - ethernet function which makes the management of computer rooms highly efficient 摘要阐述了当今计算机机房管理维护中较为先进的一种技术蓝卡技术的应用，包括一般计算机硬盘保护卡系统数据保护功能、扩展机房计算机应用范围的多操作系统功能、实现对机房计算机高效率管理维护的网络拷贝等功能。
This thesis giving a common resolution of tools caf subsystem , and design and implement of dynamic data management is important part . this article ' s contributions focus on : analyse ums system architecture based characteristic of tele - network management ; design and implement of tools common application function subsystem 论文在总结通用网管平台相关内容的基础上，给出通用网管平台中工具公共应用功能子系统的通用设计与实现的方案及技术；设计实现一种具体应用系统工具：动态数据管理工具的公共功能模块。
Then , a sharing dynamic link library of security application functions and knrfmdms were developed , in knrfmdms such functions as users " certificates management , identity authentication , session key negotiation , encrypted data transporting , digital signature and verification were preliminarily succeed , the security of data transporting on the internet was ensured and the system did work well 在此基础上，开发了共享的安全应用功能动态链接库和knrfmdms安全应用系统，初步完成了系统中用户证书管理、身份验证、会话密钥协商、加密数据传输以及数字签名与验证等功能，实现了系统中网络数据的安全传输，取得了良好的应用效果。
And they are different with the common liquid crystal compound in the molecular structure , property and application function . up to now , people have more interest on the them in the field of transferring signal and information at the molecular level . starting from the molecular design , three novel series of schiff base type liquid crystal crown ethers were synthesized 从分子设计出发，设计并合成了三类新的席夫碱型液晶冠醚化合物，根据分子中冠醚环和木端烷氧基的不同和大小以及化合物的构型将其分为六个系列， 24个化合物。
